(5) comments

Hi Bruce,
Congratulations on finishing another. I wanted to point out that I was marked wrong on 3 of your questions. Here is one of your problems that should be fixed: Check each particle that has a + Charge. Possible answer were: proton, neutron, electron or none of these. I answered proton. The system marked that wrong!!!! Last time I checked protons have + charges. I didn’t write down the other 2, but when I was marked wrong, I am certain the answers need to be fixed.

Thanks for the catch. I fixed the first one, and did a quick pass over all of the rest of the questions and made some changes to acceptable ways to write ionic charge number. They should be okay, but please let me know if you find a specific one that is incorrect.